Bruce Momjian wrote:
This would be a transparent solution. Another approach would be:Comments? This seems like our only solution.
- Use the old 7.3 approach by default. This means perfect backward compatibility for single-threaded apps and broken multithreaded apps.
- Add a new PQinitDB(int disableSigpipeHandler) initialization function. Document that multithreaded apps must call the function with disableSigpipeHandle=1 and handle SIGPIPE for libpq. Perhaps with a reference implementation in libpq (i.e. a sigpipeMode with 0 for old approach, 1 for do nothing, 2 for install our own handler).
It would prefer that approach:
It means that the multithreaded libpq apps must be updated [are there any?], but the solution is simpler and less fragile than calling 4 signal handling function in a row to selectively block SIGPIPE per-thread.
-- Manfred
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